CONTROL OF FABA BEAN ROOT ROT DISEASE BY means ofUSING some chemical inducersMICRO-ELEMENTS AND THE FUNGICIDE, RHIZOLEX-T

The effect of sSome plant chemical inducersmicroelements, i.e.namely zinc, manganese and calcium and Rhizolex-T 50 (half and recommended dose) were used singly or in combination with typical fungicide, Rhizolex-T 50 to investigate their ability toeffect towards the control of faba bean root-rot caused by Rhizoctonia solani. Laboratory, greenhouse and field studies were conducted during 2008/2009 2009/2010 seasons to study the effect of some plant chemical inducers and Rhizolex-T on reduction of root-rot of some using the faba bean cultivar, of faba bean (Giza 340). Results of in vitro studies showed that in comparing with Rhizolex-T 50 w.p as a fungicide. Using chemical inducersmicroelements and or Rhizolex-T significantly reduced inhibited the linear mycelial growth of the pathogen, R. solani when compared with the untreated control. Under greenhouse conditions, all testedisolated fungi were proved to be pathogenic and caused pre- and post-emergence damping-off while R. solani was being the most virulent. Under field conditions, root-rot disease and yield components varied greatly according to the tested inducer and / or variety???غير مفهومة . All some treatments microelements or the fungicide tested as seed treatments for field experiments led to on effective Giza 3 gave the highest values of an increase in the plant height, branches plantin comparison with the untreated control???. Rhizolex-T 50 followed by zinc were the most effective treatments in reducing the incidence of faba bean damping-off. Calcium followed by zinc were the most effective and in increasinged significantly the number of pods per plant, the weight of 100 seeds, and seed yield / plot. The most effective seed treatments in reducing faba bean infection with the root-rot disease incidence waswere the coating of faba bean seeds by Rhizolex-T followed by, zinc and then calcium in decreasing order.